If Bitcoin is banned in a country it becomes illegal to own or use. It becomes an illegal currency. If you are caught violating the law, you will be treated like a criminal. Citizens that secretly use Bitcoin in nations where it is banned are doing that at their own risk. It is better to move out of the country or friendly neighboring countries to engage in Bitcoin transitions. I desire that Bitcoin shouldn't be banned in any country because a hateful government can enforce the law harshly.
Banning and restricting are not the same concepts. China banned Bitcoin but countries like Argentina and Pakistan OP mentioned are restricting Bitcoin transactions. Placing restrictions might not necessarily mean that bitcoin will not be used as a current or investment but certain services might not be available. In some nations, the government restricts commercial banks from dealing with Bitcoin.
I actually gets your point here, the government themselves were all aware of bitcoin even though they never supported the use or adoption in some countries, yet we will still have a number of individuals amidst them that have owned bitcoin privately, the essence of this is in the identification and the use of your right in choosing how to hodl your financial investment using any means such as in the use of bitcoin since it's your money, right and interest together with the risk in using a different technology of currency aside fiat, that's why here it is very important to know that a p2p system is privately secured if you can make use of a non custodial means to hodl your bitcoin.